Re: [CAD_CAM_EDM_DRO] Re: Digitizing arms??

Harvey White wrote:

>On Thu, 24 Jun 2004 14:54:54 -0000, you wrote:
>
>
>
>>I agree,
>>
>>Get one of those summagraphics tablets on ebay real cheap... those
>>have a crosshair puck, most accurate hand-tracing you can get.
>>
>>
>
>Before you get one of them, make sure that the drivers are available
>for your operating system of choice. No drivers = no fun. Not all
>drivers are available for all operating systems depending on the model
>of the tablet.
>
>

Actually, these devices are very simple. I've never used a specific
driver. They put out strings of ASCII text, it looks something like :
P00015 00037
P00027 00305
P00120 00429

etc.
One coordinate per line, X and Y coordinates. I think the letter
says whether it is sending single points from a button push or
a continuous stream as fast as it can send them. The interface is
generally a DB-25 RS-232 serial connection.

Jon